AC Power Quality Monitor

Category:AC Power Quality Monitor
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Release date:March 23, 2022
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Detailed introduction

summary
DZ-3AAC Power Quality MonitorIt can be applied to substations of various voltage levels in the power system and power supply and distribution systems of industrial and mining enterprisesPower quality monitoringAnd analysis. This series of products are measured according to the measurement methods of various power quality indicators in IEC61000-4-30, and the performance indicators meet the requirements of IEC61000-4-30 A-level instrument performance, while also meeting the requirements of the latest national standard for power quality measurement for each indicator.
Instrument characteristics
◆ Online monitoring: Using multiple high-speed DSP+PowerPC CPUs as the core of power quality analysis, it can monitor and analyze measurement data at any time period;
High precision data acquisition system: The DSP data acquisition part adopts a 16 bit high-speed A/D converter with synchronous sampling, which has high acquisition accuracy;
Equipped with a color LCD display, it can display real-time data, waveform, spectrum, and vector maps of various indicators of power quality on site;
◆ Multi channel testing: Simultaneously detecting various power parameters of up to 6 bus sections, with unit monitoring terminals that can be flexibly combined according to on-site conditions;
Equipped with high-performance solid-state drives to replace traditional mechanical hard drives, greatly improving the security and stability of data storage;
◆ Adopting a phase-locked loop technology that combines software and hardware, with automatic frequency tracking, to prevent the impact of frequency changes on monitoring indicators in the power system and prevent frequency "leakage";
◆ Powerful communication interface: The instrument is equipped with two 100Mbps industrial Ethernet ports, as well as two USB communication interfaces and two RS485 serial ports. Multiple communication methods can be selected to interact with the remote management center for data exchange;
◆ Adopting a plug-in structure, modular design, good interchangeability, flexible insertion and removal, and convenient maintenance;
◆ Easy to install and operate, using a standard 4U height chassis that can be individually assembled or embedded into existing screens on site;
◆ Local storage function: The instrument can store sampling data records for more than half a year on site;
◆ Setting function: The device can reset, modify, and delete the clock and basic data, and can arbitrarily set the voltage and current harmonic alarm limits of the channel;
Instrument functions

Basic monitoring quantity	Effective values of frequency, voltage, and current fundamental waves, total active power, reactive power, and power factor
Basic monitoring indicators	Grid frequency, effective value of voltage/current, total active/reactive power/power factor Effective value of three-phase fundamental voltage/current, fundamental voltage/current phase, fundamental power/power factor, voltage deviation, frequency deviation, three-phase voltage imbalance, three-phase current imbalance, negative sequence quantity, harmonics (2-50 times), including total harmonic distortion rate of voltage and current, harmonic content, amplitude, and phase of each order
Advanced monitoring indicators	Voltage fluctuation and flicker
Other functions	Parameter setting function Record storage function Online statistical function GPS time synchronization function, using GPS B code time synchronization method; System timing. Power loss alarm function

Technical indicators

technical specifications	Parameter indicators
Manufacturer	Baoding Fangchang Electric Power Technology Co., Ltd
Equipment model	DZ-3A
Number of sampling paths	The number of instrument circuits can be flexibly configured, and a single set of instruments can provide monitoring of up to 12 circuits (3 phases per circuit), which are universal circuits for voltage or current.
Voltage measurement range	AC10～400V
Current measurement range	0.05～5A
Frequency measurement range	47.5～52.5Hz
Grid frequency error	≤0.01 Hz
Voltage deviation error	≤ 0.2%
Voltage fluctuation error	≤ 0.2%
Flicker error	≤ 5%
Error in three-phase voltage imbalance	≤ 0.2%
Harmonic measurement error	Meet the requirements of national standard A-level instruments
Power error	≤ 0.5%
Display screen	5.6 inch TFT color LCD screen
Working power supply	AC220V±20%频率 45Hz～55Hz DC110V/220V±20%
Communication interface; Communication protocol	Supports RS232/RS485/Ethernet port Supports ModBus RTU and IEC60870-5-103 communication protocols
power dissipation	<20W
Working temperature/humidity	Working temperature -20 ℃~+60 ℃, humidity 5%~95% (non condensing)
size	Standard 4U "19" inch chassis
weight	About 4kg
Installation method	Embedded